Sharkoon T9 case picked up on ebay for less than £30 a couple of years ago. Only recently got around to finishing it off with the Icydock 5in3. In hindsight I wish I'd used these in the first place as they don't stick out anywhere near as far as the Supermicros.
Looks a bit of a mutt but with bigger hard drives it has currently replaced 3 smaller builds (Fractal Design Array R2 mini, Node 304 and Arc Mini R2) and will also replace a Fractal Designs R3 backups build soon.
After years of fiddly drive swaps in cramped cases I'm in front loading heaven.